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DIN9021 Standard

c
Nominal
size
For thread size
Hole diameter d1
Outside diameter d2
Outside diameter. D2
KGS/1000PCS
min=nominal size
max
max=nominal size
min
Nominal size
max
min
2.7
 2.5
2.7
2.84
8
7.84
0.8
0.9
0.7
0.28
3.2
 3
3.2
3.38
9
8.84
0.8
0.9
0.7
0.349
3.7
 3.5
3.7
3.88
11
10.57
0.8
0.9
0.7
0.529
4.3
4
4.3
4.48
12
11.67
1
1.1
0.9
0.744
5.3
5
5.3
5.48
15
14.67
1.2
1.4
1
1.457
6.4
 6
6.4
6.62
18
17.67
1.6
1.8
1.4
2.792
7.4
 7
7.4
7.82
22
21.48
2
2.2
1.8
5.293
8.4
 8
8.4
8.82
24
23.48
2
2.2
1.8
6.232
10.5
 10
10.5
10.77
30
29.48
2.5
2.7
2.3
12.173
13
 12
13
13.27
37
36.38
3
3.3
2.7
22.192
15
 14
15
15.27
44
43.38
3
3.3
2.7
31.647
1
 16
17
17.27
50
49.38
3
3.3
2.7
40.895
20
 18
20
20.52
56
54.1
4
4.8
3.4
67.474
22
 20
22
22.52
60
58.1
4
4.8
3.4
76.845
25
 24
26
26.84
72
70.1
5
6
4
138.967
33
 30
33
34
92
89.8
6
7
5
272.818
39
 36
39
40
110
107.8
8
9.2
8.8
521.788
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